Determination of sulfur trioxide in engine exhaust. | Zendy

Dagmar Arnold | Zendy

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Determination of sulfur trioxide in engine exhaust.

Author(s) -

Dagmar Arnold

Publication year - 1975

Publication title -

environmental health perspectives

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.257

H-Index - 282

eISSN - 1552-9924

pISSN - 0091-6765

DOI - 10.1289/ehp.7510117

Subject(s) - sulfur trioxide , sulfur dioxide , chemistry , isopropyl alcohol , titration , trioxide , sulfuric acid , sulfur , absorption (acoustics) , exhaust gas , combustion , flue gas , inorganic chemistry , environmental chemistry , organic chemistry , materials science , composite material

Sulfur trioxide in the exhaust gas of an internal combustion engine is removed and concentrated by absorption in a solution of 80% isopropyl alcohol, which quantitatively absorbs it and inhibits the oxidation of any sulfur dioxide which may be absorbed. The absorbed sulfur trioxide (sulfuric acid) is determined by an absorption titration by using barium chloride as the titrant and thorin as the indicator. The sulfur dioxide content of the exhaust is measured continuously by means of a DuPont Model 411 ultraviolet photoanalyzer.

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